LIFE-HISTOET OF TILAEIA BAKCBOFTI. 357 



importance. The practical issues especially aifect the welfare of 

 persons resident in warm countries. 



In the year 1868 Dr. 0. Wucherer, since deceased, published 

 a paper in the ' Bahia Medical Grazette,' entitled, " Preliminary 

 Notice of a hitherto undescribed Species of "Worm encountered 

 in the urine of persons affected with the intertropical heematuria 

 of Brazil" (Eef. ISTo. 1*). Dr. Wucherer first discovered this 

 entozoon on the 4th of August, 1866, when engaged in examining 

 the chylous or milky urine of a patient then under his care at 

 the Misericordia Hospital. He was at the time actually in search 

 of the Bilharzia Jicematohia. It was at the suggestion of Grie- 

 singer that Wucherer sought for this fluke; and when thus 

 engaged he found in its place, so to say, " some filiform worms 

 which were very narrow at one extremity and very obtuse at the 

 other." As will be seen in the sequel, a similar experience after- 

 wards occurred to myself. Dr. Wucherer, with a caution worthy 

 of the true savant, did not at once conclude that the urinary 

 parasites had actually passed from his patient ; therefore taking 

 the necessary steps to prevent error, he obtained a fresh supply 

 of the excretion in a carefully cleaned vessel, and almost imme- 

 diately afterwards verified his previous discovery. In the follow- 

 ing October, and also subsequently, "Wucherer made similar 

 "finds." In two of these three instances the patients suffered 

 from chyluria; and in the third there was hsematuria. The 

 Mlari(B were in all cases living and active in their movements. 

 He did not notice any eggs f . 



In the year 1869 (when engaged in preparing a supplementary 

 bibliography to my introductory treatise on the Entozoa) I 

 chanced to stumble upon a paper by Dr. Salisbury which had 

 hitherto escaped the attention of helminthologists (Ref. No. 2). 

 In this^ memoir, published in 1868, Dr. Salisbury announces the 

 discovery of a small species of entozoon in the bladder of a 

 patient who passed milky urine. Dr. Salisbury had the boldness 

 at once to describe the worm as new to science, and placed it in 

 the genus Trichina {T. cystica, Salisb.). Nothing, I may remark, 

 could be more striking than the difference of attitude assumed 



* Tlie numbers here given refer to the Bibliography at the close of this 

 communication. 



t Some error as to the date of Wucherer's discovery has crept into the lite- 

 rature of this subject: Thus, in the 2nd edition of Davaine's ' Traite' (p. 943) 

 the year 1868 is mentioned as that in which the original find vras made. In 

 this matter I have follovFed the authority of Dr. Silva Lima. — T. S. 0. 



